Al-Owaidi*, Dalal Abdulrahman Mohammed, and Prof. Dr. Ismail bin Salamah **Al-Bursan. “Effect of Sample Size and Test Length on Item Parameter Estimation Accuracy According to Generalized Partial Credit Model and the Delta Scoring Model”. Arts for Educational & Psychological Studies, vol. 7, no. 2, June 2025, pp. 89-125, https://doi.org/10.53285/artsep.v7i2.2628.